Volume 69, Part 7 (July 2013)

organic compounds

2-Oxo-2H-chromen-4-yl 4-methylbenzoate

Abstract: The asymmetric unit of the title compound, C17H12O4, consists of two independent molecules. The chromen-2-one ring and the 4-methylbenzoate side chain are inclined to one another at a dihedral angle of 64.79 (10)° in one molecule and 88.3 (1)° in the other. In the crystal, molecules form R22(8) centrosymmetric dimers via C-HO hydrogen bonds. These dimers are stacked by C-HO hydrogen bonds, resulting in R22(18) and R32(16) ring motifs. - stacking interactions between two parallel chromen-2-one rings, with centroid-centroid distances of 3.743 (1) and 3.771 (1) Å, are also present.

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